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Old 02-17-2009, 02:22 PM
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Send a message via AIM to Transporter7220 Send a message via MSN to Transporter7220 '98 Z24 Coupe 5 Speed
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Location: Rochester, NY
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Make: Chevrolet
Model: Cavalier
Engine: 2.4L LD9
LD9 Exhaust

I'm looking to put together an under the radar exhaust for my 98 Cav with an LD9. I'd really like it to be as quiet as stock, but keep it high flow, but if I have to sacrifice some power to keep it quiet I'm alright with that.

So far I'm thinking a Pacesetter 4-1 ceramic coated header, 2.5" magnaflow high flow cat and an ebay special Silverline stainless 2.5" glass pack for a resonator.

So my real question is what Muffler should I get to keep my car as quiet as possible, OEM quiet.

I've heard that Corsa and Walker make quiet mufflers, but any advise would be appreciated.

It would also be nice to have a muffler with dual 2.5" exits because I want to make it split for dual tips, but I could always just use a Y.
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Last edited by Transporter7220; 02-17-2009 at 03:02 PM.
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Old 02-17-2009, 05:17 PM
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The keep it quiet and maximize performance, I would "Y" it a little sooner and run 2 decent size OEM style mufflers.
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  #3  
Old 02-17-2009, 05:28 PM
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i too am on a quest for quiet but good flowing...

planning on a ron's header, magnaflow cat, magnaflow res. and a cherry bomb glasspack.
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Old 02-17-2009, 07:16 PM
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Quote:
Originally Posted by bear8ruf View Post
The keep it quiet and maximize performance, I would "Y" it a little sooner and run 2 decent size OEM style mufflers.
that would be your best deal, unless you know of someone with a setup you can try.
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Old 02-17-2009, 07:54 PM
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I would suggest Flowmaster "Hushpower" mufflers...
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Old 02-17-2009, 08:02 PM
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Make: Chevy -- Olds
Model: 99 Malibu -- D88 Interceptor
Engine: 2.4L LD9 -- 7.5L Rocket
Might I suggest the mufflers used for GrandAms (similar to Corvette) which have 1 inlet, sit sideways in the car and have 2 exits. Heck, the factory muffler for v6 malibus is like that (fake dual exhaust).... Remember you can always add another resonator if needed
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Old 02-18-2009, 12:00 PM
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Send a message via AIM to Transporter7220 Send a message via MSN to Transporter7220 '98 Z24 Coupe 5 Speed
Join Date: Feb 2009
Location: Rochester, NY
Posts: 15
Make: Chevrolet
Model: Cavalier
Engine: 2.4L LD9
So do you think the Grand Am style mufflers would be high enough flow?

The 2 OEM style mufflers sounds good, I'm just thinking I could save some weight by going with the single muffler with 2 exits.

Thanks everyone for your input

Last edited by Transporter7220; 02-18-2009 at 02:03 PM.
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  #8  
Old 02-19-2009, 09:04 PM
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I have a pair of walkers on mine and I am pleased with it. They flow well and are just slightly louder than stock with a glass pack (perf not louvered) for a resonator....
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Old 02-19-2009, 09:09 PM
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Send a message via AIM to Transporter7220 Send a message via MSN to Transporter7220 '98 Z24 Coupe 5 Speed
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Engine: 2.4L LD9
Thanks for the input. Right now I'm planning on a pacesetter 4-1 header, magnaflow high flow cat, stainless 18" glass pack as a resonator, and a QuietFlow Walker muffler for an 02 Camaro. It has a 2.5 in and 2 2.25 outs, which is what I was looking for, hopefully that will keep things quiet.
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Old 02-19-2009, 09:28 PM
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Leave your stock after-cat pipe and muffler in place.
then install a electric exhuast cut-out just behind your converter. or before, whichever works.

wire it up so when you want to "go", you flip a switch and have the best exhuast possible... NO EXHAUST!

Then close it so you can drive to work without the "man" stopping you over it being too loud.
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Old 02-19-2009, 09:55 PM
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Engine: 2.4L LD9
Problem is I've already got a Megan catback, it was on the car when I bought it and I hate it, so I'm replacing it.

I've also heard that 4 bangers don't benefit from cutouts.
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Old 02-20-2009, 12:07 AM
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Originally Posted by Transporter7220 View Post
I've also heard that 4 bangers don't benefit from cutouts.
You've heard wrong my friend, cut outs are always beneficial for "performance" motors like are quads
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  #13  
Old 02-20-2009, 12:18 AM
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Well I'll agree to disagree, I've heard it from some pretty reputable people.
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  #14  
Old 02-20-2009, 12:30 AM
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Hey Kentucky Hunter!....what engine do you have in your Avatar?

Oh and back to the subject....

Pacesetter Header fine. GET A RESONATOR, and still leave the CAT on. Find a HIGH FLOW cat and test it with a flashlight to given specs.

NOTE* When I just finished my build I had to drive her to the muffler shop so they can weld the header to the downpipe.

SO I was running open header...and thats an OBX header so....its not that long. Not fun let me tell you that!
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  #15  
Old 02-20-2009, 01:05 AM
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hahaha I had to do the same thing...it was annoyingly loud!
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